SOMATOM Definition Edge

Exceeding expectations

Cardiology

Coronary CTA for higher heart rates

Introducing a rotation speed of 0.28 s, and a temporal resolution of 142 ms to clinical CT routine, the new SOMATOM Definition Edge provides excellent image quality in cardiac imaging even for higher heart rates of more than 80 bpm.

Collimation: 128 x 0.6 mm

Tube settings: 100 kV, eff. 98 mAs

Scan time: 3.7 s

DLP: 179 mGy cm

Scan length: 137 mm

CTDIvol: 11.39 mGy

Rotation time: 0.28 s

Eff. dose: 2.5 mSv

Heart rate: 81 bpm

(Images: CIMOP Bizet, Paris, France)

TAVI planning with a pitch of 1.7

With an acquisition speed of up to 23 cm/s (pitch 1.7), the new SOMATOM Definition Edge boosts contrast media efficiency and substantially shortens scan times, especially in pre-procedural TAVI/TAVR planning.

Emergency Care

Comprehensive stroke assessment

The Adaptive 4D Spiral puts perfusion scanning on a new level. Being able to evaluate perfusion deficits in a very short time, and to effortlessly acquire scan range beyond detector coverage, greatly improves stroke assessment and workflow.

Emergency Care for pediatric patients

In challenging cases, such as this 9 months old baby with suspected bronchia stenosis, the SOMATOM Definition Edge’s faster pitch (of 1.7) and higher rotation time (of 0.28s) allow for acquiring diagnostic information with free breathing at an ultra low dose of DLP 2 mGy cm.

Collimation: 128 x 0.6 mm

Tube settings: 100 kV, 4 eff. mAs

Scan time: 0.6 s

DLP: 2 mGy cm

Scan length: 133 mm

CTDIvol: 0.14 mGy

Rotation time: 0.28 s

Eff. dose: 0.17 mSv

(Images: Linköping University Hospital, Linköping, Sweden)

iterative Metal Artifacts Reduction (iMAR)

iMAR1,2 technology applies iterative corrections to reduce metal artifacts effectively. Even in challenging cases, such as two hip prostheses, the pelvic anatomical structures can be clearly visualized.

Collimation: 128 x 0.6 mm

Tube settings: 100 kV, 372 eff. mAs

Scan time: 9.5 s

DLP: 682.4 mGy cm

Scan length: 448.5 mm

CTDIvol: 14.7 mGy

Rotation time: 0.5 s

Eff. dose: 10.2 mSv

(Images: Luzerner Kantonsspital, Luzern, Switzerland)

Infra-renal abdominal aortic aneurysm (AAA)

CT angiography acquired with TwinBeam Dual Energy, using automatic bone removal, converts a large dataset into three dimensional visualizations very conveniently and easily.

Collimation: 64 x 0.6 mm

Tube settings: AuSn120 kV, 301 eff. mAs

Scan time: 44 s

DLP: 1,007.8 mGy cm

Scan length: 1,534 mm

CTDIvol: 6.44 mGy

Rotation time: 0.33 s

Eff. dose: 8 mSv

(Images: University Erlangen-Nuremberg, Erlangen, Germany)

Pediatric Cerebrum

ADMIRE3, the latest generation of iterative reconstruction, greatly enhances image quality while reducing radiation dose. In this pediatric cerebral examination, great grey-white matter differentiation was achieved using a radiation dose of CTDIvol 21.1 mGy in combination with ADMIRE.

Collimation: 128 x 0.6 mm

Tube settings: 120 kV, 146 eff. mAs

Scan time: 5.7 s

DLP: 329.9 mGy cm

Scan length: 140 mm

CTDIvol: 21.1 mGy

Rotation time: 1 s

Eff. dose: 1.3 mSv

(Images: Luzerner Kantonsspital, Luzern, Switzerland)

Automated spine reconstruction and labeling

FAST Spine helps streamline workflows when reconstructing spine datasets. In challenging cases, such as this 13 years old boy with scoliosis, the benefits of reduced door-to-image time boost diagnostic accuracy and confidence – and make a huge difference in patient management.

Collimation: 128 x 0.6 mm

Tube settings: 100 kV, 52 eff. mAs

Scan time: 18 s

DLP: 96 mGy cm

Scan length: 541 mm

CTDIvol: 1.64 mGy

Rotation time: 1.0 s

Eff. dose: 1.44 mSv

(Images: Erasmus Medical Center, Rotterdam, Netherlands)

Oncology

Rule out of pulmonary diseases

The Stellar Detector technology, in combination with high-end iterative reconstruction algorithms, such as SAFIRE4 and ADMIRE, facilitates ruling out pulmonary disease at an early stage, using ultra low doses.

Collimation: 128 x 0.6 mm

Tube settings: 100 kV, 10 eff. mAs

Scan time: 1.9 s

DLP: 15 mGy cm

Scan length: 300 mm

CTDIvol: 0.39 mGy

Rotation time: 0.28 s

Eff. dose: 0.21 mSv

(Images: CIMOP Bizet, Paris, France)

Smaller tumor visualization

Metal artifacts can impact the visualization of the surrounding tissues, as shown in this case – a small tumor, adjacent to a tibial metal fixation, therefore needs to be corrected properly. With iMAR1,2, Siemens presents an exclusive iterative metal artifact reduction technique that enhances diagnostic confidence and provides clear guidance for biopsy.

Collimation: 128 x 0.6 mm

Tube settings: 120 kV, 157 eff. mAs

Scan time: 4.4 s

DLP: 173.3 mGy cm

Scan length: 147 mm

CTDIvol: 10.61 mGy

Rotation time: 0.5 s

Eff. dose: 2.6 mSv

(Images: University Hospital of Basel, Basel, Switzerland)

Follow-up tumor treatment

A follow-up scan of a liver metastasis after microwave ablation treatment acquired by TwinBeam Dual Energy1 shows a hypodense lesion in the liver and in the right kidney. The image contrast is greatly increased by monoenergetic imaging. And both lesions show no significant enhancement in the fused VNC/ iodine image. Therefore, residual tumor tissue can be confidently excluded and a kidney cyst can be diagnosed.

Related Products, Services & Resources

2iMAR is designed to yield images with a reduced level of metal artifacts compared to conventional reconstruction if the underlying CT data is distorted by metal being present in the scanned object. The exact amount of metal artifact reduction and the corresponding improvement in image quality achievable depends on a number of factors, including composition and size of the metal part within the object, the patient size, anatomical location and clinical practice. It is recommended, to perform iMAR reconstruction in addition to conventional reconstruction.

3In clinical practice, the use of ADMIRE may reduce CT patient dose depending on the clinical task, patient size, anatomical location, and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task

4In clinical practice, the use of SAFIRE may reduce CT patient dose depending on the clinical task, patient size, anatomical location, and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task. The following test method was used to determine a 54 to 60% dose reduction when using the SAFIRE reconstruction software. Noise, CT numbers, homogenity, low-contast resolution, and high contrast resolution were assessed in a Gammex 438 phantom. Low dose data reconstructed with SAFIRE showed the same image quality compared to full dose data based on this test. Data on file.